/*
 * Copyright 2004 - 2013 Wayne Grant
 *           2013 - 2025 Kai Kramer
 *
 * This file is part of KeyStore Explorer.
 *
 * KeyStore Explorer is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * KeyStore Explorer is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with KeyStore Explorer.  If not, see <http://www.gnu.org/licenses/>.
 */
package org.kse.gui.dialogs;

import java.awt.BorderLayout;
import java.awt.Dialog;
import java.awt.Dimension;
import java.awt.Toolkit;
import java.awt.datatransfer.Clipboard;
import java.awt.datatransfer.StringSelection;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import java.math.BigInteger;
import java.security.Key;
import java.security.KeyStore;
import java.security.KeyStoreException;
import java.security.NoSuchAlgorithmException;
import java.security.PrivateKey;
import java.security.ProviderException;
import java.security.PublicKey;
import java.security.UnrecoverableKeyException;
import java.security.cert.CertificateEncodingException;
import java.security.cert.X509Certificate;
import java.security.interfaces.DSAParams;
import java.security.interfaces.DSAPrivateKey;
import java.security.interfaces.DSAPublicKey;
import java.security.interfaces.RSAPrivateCrtKey;
import java.security.interfaces.RSAPublicKey;
import java.text.MessageFormat;
import java.util.Date;
import java.util.Enumeration;
import java.util.ResourceBundle;
import java.util.TreeSet;

import javax.crypto.SecretKey;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTree;
import javax.swing.ScrollPaneConstants;
import javax.swing.SwingUtilities;
import javax.swing.border.EmptyBorder;
import javax.swing.tree.DefaultMutableTreeNode;
import javax.swing.tree.TreeNode;
import javax.swing.tree.TreePath;
import javax.swing.tree.TreeSelectionModel;

import org.kse.crypto.CryptoException;
import org.kse.crypto.KeyInfo;
import org.kse.gui.passwordmanager.Password;
import org.kse.crypto.digest.DigestType;
import org.kse.crypto.digest.DigestUtil;
import org.kse.crypto.keypair.KeyPairUtil;
import org.kse.crypto.keystore.KeyStoreType;
import org.kse.crypto.keystore.KeyStoreUtil;
import org.kse.crypto.secretkey.SecretKeyType;
import org.kse.crypto.secretkey.SecretKeyUtil;
import org.kse.crypto.x509.X500NameUtils;
import org.kse.crypto.x509.X509CertUtil;
import org.kse.gui.CursorUtil;
import org.kse.gui.components.JEscDialog;
import org.kse.gui.PlatformUtil;
import org.kse.utilities.StringUtils;
import org.kse.utilities.history.KeyStoreHistory;
import org.kse.utilities.history.KeyStoreState;
import org.kse.utilities.io.IndentSequence;

/**
 * Displays the properties of a supplied KeyStore.
 */
public class DProperties extends JEscDialog {
    private static final long serialVersionUID = 1L;

    private static ResourceBundle res = ResourceBundle.getBundle("org/kse/gui/dialogs/resources");

    private static final String NEWLINE = "\n";

    private JPanel jpButtons;
    private JButton jbCopy;
    private JButton jbOK;
    private JPanel jpProperties;
    private JTree jtrProperties;
    private JScrollPane jspProperties;
    private KeyStoreHistory history;
    private KeyStoreState currentState;
    private IndentSequence INDENT = IndentSequence.FOUR_SPACES;

    /**
     * Creates a new DProperties dialog.
     *
     * @param parent  Parent frame
     * @param history KeyStore history
     * @throws CryptoException If a problem occurred while getting the properties
     */
    public DProperties(JFrame parent, KeyStoreHistory history) throws CryptoException {
        super(parent, Dialog.ModalityType.DOCUMENT_MODAL);
        this.history = history;
        this.currentState = history.getCurrentState();
        initComponents();
    }

    private void initComponents() throws CryptoException {
        jbCopy = new JButton(res.getString("DProperties.jbCopy.text"));
        PlatformUtil.setMnemonic(jbCopy, res.getString("DProperties.jbCopy.mnemonic").charAt(0));
        jbCopy.setToolTipText(res.getString("DProperties.jbCopy.tooltip"));
        jbCopy.addActionListener(evt -> {
            try {
                CursorUtil.setCursorBusy(DProperties.this);
                copyPressed();
            } finally {
                CursorUtil.setCursorFree(DProperties.this);
            }
        });

        jbOK = new JButton(res.getString("DProperties.jbOK.text"));
        jbOK.addActionListener(evt -> okPressed());

        jpButtons = PlatformUtil.createDialogButtonPanel(jbOK, null, jbCopy);

        jpProperties = new JPanel(new BorderLayout());
        jpProperties.setBorder(new EmptyBorder(5, 5, 5, 5));

        jtrProperties = new JTree(createPropertiesNodes());
        jtrProperties.setRowHeight(Math.max(18, jtrProperties.getRowHeight()));
        jtrProperties.setShowsRootHandles(true);
        jtrProperties.setRootVisible(false);
        jtrProperties.getSelectionModel().setSelectionMode(TreeSelectionModel.SINGLE_TREE_SELECTION);
        jtrProperties.setCellRenderer(new PropertiesTreeCellRend());

        TreeNode topNode = (TreeNode) jtrProperties.getModel().getRoot();
        expandTwoLevels(new TreePath(topNode));

        jspProperties = PlatformUtil.createScrollPane(jtrProperties, ScrollPaneConstants.VERTICAL_SCROLLBAR_ALWAYS,
                                                      ScrollPaneConstants.HORIZONTAL_SCROLLBAR_ALWAYS);
        jspProperties.setPreferredSize(new Dimension(400, 250));
        jpProperties.add(jspProperties, BorderLayout.CENTER);

        getContentPane().add(jpProperties, BorderLayout.CENTER);
        getContentPane().add(jpButtons, BorderLayout.SOUTH);

        setTitle(MessageFormat.format(res.getString("DProperties.Title"), history.getName()));
        setResizable(true);

        addWindowListener(new WindowAdapter() {
            @Override
            public void windowClosing(WindowEvent evt) {
                closeDialog();
            }
        });

        getRootPane().setDefaultButton(jbOK);

        pack();

        SwingUtilities.invokeLater(() -> jbOK.requestFocus());
    }

    private DefaultMutableTreeNode createPropertiesNodes() throws CryptoException {
        KeyStore keyStore = currentState.getKeyStore();

        String root = MessageFormat.format(res.getString("DProperties.properties.Root"), history.getName());
        DefaultMutableTreeNode rootNode = new DefaultMutableTreeNode(root);

        String file = history.getPath();
        DefaultMutableTreeNode fileNode = new DefaultMutableTreeNode(
                MessageFormat.format(res.getString("DProperties.properties.File"), file));
        rootNode.add(fileNode);

        String type = keyStore.getType();
        DefaultMutableTreeNode typeNode = new DefaultMutableTreeNode(
                MessageFormat.format(res.getString("DProperties.properties.Type"), type));
        rootNode.add(typeNode);

        String provider = keyStore.getProvider().getName();
        DefaultMutableTreeNode providerNode = new DefaultMutableTreeNode(
                MessageFormat.format(res.getString("DProperties.properties.Provider"), provider));
        rootNode.add(providerNode);

        createKeysNodes(rootNode);

        createKeyPairsNodes(rootNode);

        createTrustedCertificatesNodes(rootNode);

        return rootNode;
    }

    private TreeSet<String> getAliasesInAlphaOrder() throws CryptoException {
        try {
            KeyStore keyStore = currentState.getKeyStore();

            TreeSet<String> aliases = new TreeSet<>();

            Enumeration<String> enumAliases = keyStore.aliases();

            while (enumAliases.hasMoreElements()) {
                String alias = enumAliases.nextElement();

                if (KeyStoreUtil.isSupportedEntryType(alias, keyStore)) {
                    aliases.add(alias);
                }
            }
            return aliases;
        } catch (KeyStoreException ex) {
            throw new CryptoException(res.getString("DProperties.NoGetProperties.exception.message"), ex);
        }
    }

    private void createTrustedCertificatesNodes(DefaultMutableTreeNode parentNode) throws CryptoException {
        try {
            KeyStore keyStore = currentState.getKeyStore();

            TreeSet<String> aliases = getAliasesInAlphaOrder();

            DefaultMutableTreeNode trustCertsNode = new DefaultMutableTreeNode(
                    res.getString("DProperties.properties.TrustedCertificates"));
            parentNode.add(trustCertsNode);

            boolean trustCertsPresent = false;

            for (String alias : aliases) {
                if (KeyStoreUtil.isTrustedCertificateEntry(alias, keyStore)) {
                    createTrustedCertificateNodes(trustCertsNode, alias);

                    trustCertsPresent = true;
                }
            }

            if (!trustCertsPresent) {
                DefaultMutableTreeNode emptyTrustCertsNode = new DefaultMutableTreeNode(
                        res.getString("DProperties.properties.None"));
                trustCertsNode.add(emptyTrustCertsNode);
            }
        } catch (KeyStoreException ex) {
            throw new CryptoException(res.getString("DProperties.NoGetProperties.exception.message"), ex);
        }
    }

    private void createTrustedCertificateNodes(DefaultMutableTreeNode parentNode, String alias) throws CryptoException {
        try {
            KeyStore keyStore = currentState.getKeyStore();

            DefaultMutableTreeNode trustedCertificateNode = new DefaultMutableTreeNode(alias);
            parentNode.add(trustedCertificateNode);

            createLastModifiedNode(trustedCertificateNode, alias);

            X509Certificate trustedCertificate = X509CertUtil.convertCertificate(keyStore.getCertificate(alias));

            populateCertificateNode(trustedCertificateNode, trustedCertificate);
        } catch (KeyStoreException ex) {
            throw new CryptoException(res.getString("DProperties.NoGetProperties.exception.message"), ex);
        }
    }

    private void populateCertificateNode(DefaultMutableTreeNode certificateNode, X509Certificate certificate)
            throws CryptoException {
        try {
            String version = MessageFormat.format(res.getString("DProperties.properties.Version"),
                                                  "" + certificate.getVersion());
            certificateNode.add(new DefaultMutableTreeNode(version));

            String subject = MessageFormat.format(res.getString("DProperties.properties.Subject"),
                                                  X500NameUtils.x500PrincipalToX500Name(
                                                          certificate.getSubjectX500Principal()));
            certificateNode.add(new DefaultMutableTreeNode(subject));

            String issuer = MessageFormat.format(res.getString("DProperties.properties.Issuer"),
                                                 X500NameUtils.x500PrincipalToX500Name(
                                                         certificate.getIssuerX500Principal()));
            certificateNode.add(new DefaultMutableTreeNode(issuer));

            String serialNumber = MessageFormat.format(res.getString("DProperties.properties.SerialNumber"),
                                                       X509CertUtil.getSerialNumberAsHex(certificate));
            certificateNode.add(new DefaultMutableTreeNode(serialNumber));

            Date validFromDate = certificate.getNotBefore();
            String validFrom = MessageFormat.format(res.getString("DProperties.properties.ValidFrom"),
                                                    StringUtils.formatDate(validFromDate));
            certificateNode.add(new DefaultMutableTreeNode(validFrom));

            Date validUntilDate = certificate.getNotAfter();
            String validUntil = MessageFormat.format(res.getString("DProperties.properties.ValidUntil"),
                                                     StringUtils.formatDate(validUntilDate));
            certificateNode.add(new DefaultMutableTreeNode(validUntil));

            createPublicKeyNodes(certificateNode, certificate);

            String signatureAlgorithm = MessageFormat.format(res.getString("DProperties.properties.SignatureAlgorithm"),
                                                             X509CertUtil.getCertificateSignatureAlgorithm(
                                                                     certificate));
            certificateNode.add(new DefaultMutableTreeNode(signatureAlgorithm));

            byte[] cert = certificate.getEncoded();

            String md5 = MessageFormat.format(res.getString("DProperties.properties.Md5Fingerprint"),
                                              DigestUtil.getFriendlyMessageDigest(cert, DigestType.MD5));
            certificateNode.add(new DefaultMutableTreeNode(md5));

            String sha1 = MessageFormat.format(res.getString("DProperties.properties.Sha1Fingerprint"),
                                               DigestUtil.getFriendlyMessageDigest(cert, DigestType.SHA1));
            certificateNode.add(new DefaultMutableTreeNode(sha1));
        } catch (CertificateEncodingException ex) {
            throw new CryptoException(res.getString("DProperties.NoGetProperties.exception.message"), ex);
        }
    }

    private void createPublicKeyNodes(DefaultMutableTreeNode parentNode, X509Certificate certificate)
            throws CryptoException {
        createPublicKeyNodes(parentNode, certificate.getPublicKey());
    }

    private void createPublicKeyNodes(DefaultMutableTreeNode parentNode, PublicKey publicKey) throws CryptoException {
        DefaultMutableTreeNode publicKeyNode = new DefaultMutableTreeNode(
                res.getString("DProperties.properties.PublicKey"));
        parentNode.add(publicKeyNode);

        KeyInfo keyInfo = KeyPairUtil.getKeyInfo(publicKey);
        String keyAlg = keyInfo.getAlgorithm();

        publicKeyNode.add(new DefaultMutableTreeNode(
                MessageFormat.format(res.getString("DProperties.properties.Algorithm"), keyAlg)));

        Integer keySize = keyInfo.getSize();

        if (keySize != null) {
            publicKeyNode.add(new DefaultMutableTreeNode(
                    MessageFormat.format(res.getString("DProperties.properties.KeySize"), "" + keyInfo.getSize())));
        } else {
            publicKeyNode.add(new DefaultMutableTreeNode(
                    MessageFormat.format(res.getString("DProperties.properties.KeySize"), "?")));
        }

        String keyFormat = publicKey.getFormat();

        publicKeyNode.add(new DefaultMutableTreeNode(
                MessageFormat.format(res.getString("DProperties.properties.Format"), keyFormat)));

        String keyEncoded = "0x" + new BigInteger(1, publicKey.getEncoded()).toString(16).toUpperCase();

        publicKeyNode.add(new DefaultMutableTreeNode(
                MessageFormat.format(res.getString("DProperties.properties.Encoded"), keyEncoded)));

        if (publicKey instanceof RSAPublicKey) {
            RSAPublicKey rsaPublicKey = (RSAPublicKey) publicKey;

            String publicExponent = MessageFormat.format(
                    res.getString("DProperties.properties.public.rsa.PublicExponent"),
                    "0x" + rsaPublicKey.getPublicExponent().toString(16).toUpperCase());
            publicKeyNode.add(new DefaultMutableTreeNode(publicExponent));

            String modulus = MessageFormat.format(res.getString("DProperties.properties.public.rsa.Modulus"),
                                                  "0x" + rsaPublicKey.getModulus().toString(16).toUpperCase());
            publicKeyNode.add(new DefaultMutableTreeNode(modulus));

        } else if (publicKey instanceof DSAPublicKey) {
            DSAPublicKey dsaPublicKey = (DSAPublicKey) publicKey;

            DSAParams dsaParams = dsaPublicKey.getParams();

            String primeModulusP = MessageFormat.format(
                    res.getString("DProperties.properties.public.dsa.PrimeModulusP"),
                    "0x" + dsaParams.getP().toString(16).toUpperCase());
            publicKeyNode.add(new DefaultMutableTreeNode(primeModulusP));

            String primeQ = MessageFormat.format(res.getString("DProperties.properties.public.dsa.PrimeQ"),
                                                 "0x" + dsaParams.getQ().toString(16).toUpperCase());
            publicKeyNode.add(new DefaultMutableTreeNode(primeQ));

            String generatorG = MessageFormat.format(res.getString("DProperties.properties.public.dsa.GeneratorG"),
                                                     "0x" + dsaParams.getG().toString(16).toUpperCase());
            publicKeyNode.add(new DefaultMutableTreeNode(generatorG));

            String publicKeyY = MessageFormat.format(res.getString("DProperties.properties.public.dsa.PublicKeyY"),
                                                     "0x" + dsaPublicKey.getY().toString(16).toUpperCase());
            publicKeyNode.add(new DefaultMutableTreeNode(publicKeyY));
        }
    }

    private void createKeyPairsNodes(DefaultMutableTreeNode parentNode) throws CryptoException {
        try {
            KeyStore keyStore = currentState.getKeyStore();

            TreeSet<String> aliases = getAliasesInAlphaOrder();

            DefaultMutableTreeNode keyPairsNode = new DefaultMutableTreeNode(
                    res.getString("DProperties.properties.KeyPairs"));
            parentNode.add(keyPairsNode);

            boolean keyPairsPresent = false;

            for (String alias : aliases) {
                if (KeyStoreUtil.isKeyPairEntry(alias, keyStore)) {
                    createKeyPairNodes(keyPairsNode, alias);

                    keyPairsPresent = true;
                }
            }

            if (!keyPairsPresent) {
                DefaultMutableTreeNode emptyKeyPairNode = new DefaultMutableTreeNode(
                        res.getString("DProperties.properties.None"));
                keyPairsNode.add(emptyKeyPairNode);
            }
        } catch (KeyStoreException ex) {
            throw new CryptoException(res.getString("DProperties.NoGetProperties.exception.message"), ex);
        }
    }

    private void createKeyPairNodes(DefaultMutableTreeNode parentNode, String alias) throws CryptoException {
        try {
            KeyStore keyStore = currentState.getKeyStore();

            DefaultMutableTreeNode keyPairNode = new DefaultMutableTreeNode(alias);
            parentNode.add(keyPairNode);

            createLastModifiedNode(keyPairNode, alias);

            createPrivateKeyNodes(keyPairNode, alias);

            X509Certificate[] certificates = X509CertUtil.convertCertificates(keyStore.getCertificateChain(alias));

            DefaultMutableTreeNode certificatesNode = new DefaultMutableTreeNode(
                    res.getString("DProperties.properties.Certificates"));
            keyPairNode.add(certificatesNode);

            for (X509Certificate certificate : certificates) {
                DefaultMutableTreeNode certificateNode = new DefaultMutableTreeNode(
                        X509CertUtil.getShortName(certificate));
                certificatesNode.add(certificateNode);

                populateCertificateNode(certificateNode, certificate);
            }
        } catch (KeyStoreException ex) {
            throw new CryptoException(res.getString("DProperties.NoGetProperties.exception.message"), ex);
        }
    }

    private void createPrivateKeyNodes(DefaultMutableTreeNode parentNode, String alias) throws CryptoException {
        try {
            KeyStore keyStore = currentState.getKeyStore();

            Password password = getEntryPassword(alias);

            if (password == null) {
                DefaultMutableTreeNode privateKeyNode = new DefaultMutableTreeNode(
                        res.getString("DProperties.properties.PrivateKey"));
                parentNode.add(privateKeyNode);

                DefaultMutableTreeNode lockedNode = new DefaultMutableTreeNode(
                        res.getString("DProperties.properties.Locked"));
                privateKeyNode.add(lockedNode);

                return;
            }

            PrivateKey privateKey = (PrivateKey) keyStore.getKey(alias, password.toCharArray());

            createPrivateKeyNodes(parentNode, privateKey);
        } catch (NoSuchAlgorithmException | KeyStoreException | UnrecoverableKeyException ex) {
            throw new CryptoException(res.getString("DProperties.NoGetProperties.exception.message"), ex);
        }
    }

    private void createPrivateKeyNodes(DefaultMutableTreeNode parentNode, PrivateKey privateKey)
            throws CryptoException {
        DefaultMutableTreeNode privateKeyNode = new DefaultMutableTreeNode(
                res.getString("DProperties.properties.PrivateKey"));
        parentNode.add(privateKeyNode);
        currentState.getKeyStore();

        KeyInfo keyInfo = KeyPairUtil.getKeyInfo(privateKey);
        String keyAlg = keyInfo.getAlgorithm();

        privateKeyNode.add(new DefaultMutableTreeNode(
                MessageFormat.format(res.getString("DProperties.properties.Algorithm"), keyAlg)));

        Integer keySize = keyInfo.getSize();

        if (keySize != null) {
            privateKeyNode.add(new DefaultMutableTreeNode(
                    MessageFormat.format(res.getString("DProperties.properties.KeySize"), "" + keyInfo.getSize())));
        } else {
            privateKeyNode.add(new DefaultMutableTreeNode(
                    MessageFormat.format(res.getString("DProperties.properties.KeySize"), "?")));
        }

        String keyFormat = privateKey.getFormat();

        privateKeyNode.add(new DefaultMutableTreeNode(
                MessageFormat.format(res.getString("DProperties.properties.Format"), keyFormat)));

        String keyEncoded;
        byte[] encodedKey = privateKey.getEncoded();
        if (encodedKey != null) {
            keyEncoded = "0x" + new BigInteger(1, privateKey.getEncoded()).toString(16).toUpperCase();
        } else {
            keyEncoded = "*****";
        }

        privateKeyNode.add(new DefaultMutableTreeNode(
                MessageFormat.format(res.getString("DProperties.properties.Encoded"), keyEncoded)));

        if (privateKey instanceof RSAPrivateCrtKey) {
            RSAPrivateCrtKey rsaPrivateKey = (RSAPrivateCrtKey) privateKey;

            String publicExponent = MessageFormat.format(
                    res.getString("DProperties.properties.private.rsa.PublicExponent"),
                    "0x" + rsaPrivateKey.getPublicExponent().toString(16).toUpperCase());
            privateKeyNode.add(new DefaultMutableTreeNode(publicExponent));

            String modulus = MessageFormat.format(res.getString("DProperties.properties.private.rsa.Modulus"),
                                                  "0x" + rsaPrivateKey.getModulus().toString(16).toUpperCase());
            privateKeyNode.add(new DefaultMutableTreeNode(modulus));

            String primeP = MessageFormat.format(res.getString("DProperties.properties.private.rsa.PrimeP"),
                                                 "0x" + rsaPrivateKey.getPrimeP().toString(16).toUpperCase());
            privateKeyNode.add(new DefaultMutableTreeNode(primeP));

            String primeQ = MessageFormat.format(res.getString("DProperties.properties.private.rsa.PrimeQ"),
                                                 "0x" + rsaPrivateKey.getPrimeQ().toString(16).toUpperCase());
            privateKeyNode.add(new DefaultMutableTreeNode(primeQ));

            String primeExponentP = MessageFormat.format(
                    res.getString("DProperties.properties.private.rsa.PrimeExponentP"),
                    "0x" + rsaPrivateKey.getPrimeExponentP().toString(16).toUpperCase());
            privateKeyNode.add(new DefaultMutableTreeNode(primeExponentP));

            String primeExponentQ = MessageFormat.format(
                    res.getString("DProperties.properties.private.rsa.PrimeExponentQ"),
                    "0x" + rsaPrivateKey.getPrimeExponentQ().toString(16).toUpperCase());
            privateKeyNode.add(new DefaultMutableTreeNode(primeExponentQ));

            String crtCoefficient = MessageFormat.format(
                    res.getString("DProperties.properties.private.rsa.CrtCoefficient"),
                    "0x" + rsaPrivateKey.getCrtCoefficient().toString(16).toUpperCase());
            privateKeyNode.add(new DefaultMutableTreeNode(crtCoefficient));

            String privateExponent = MessageFormat.format(
                    res.getString("DProperties.properties.private.rsa.PrivateExponent"),
                    "0x" + rsaPrivateKey.getPrivateExponent().toString(16).toUpperCase());
            privateKeyNode.add(new DefaultMutableTreeNode(privateExponent));

        } else if (privateKey instanceof DSAPrivateKey) {
            DSAPrivateKey dsaPrivateKey = (DSAPrivateKey) privateKey;

            DSAParams dsaParams = dsaPrivateKey.getParams();

            String primeModulusP = MessageFormat.format(
                    res.getString("DProperties.properties.private.dsa.PrimeModulusP"),
                    "0x" + dsaParams.getP().toString(16).toUpperCase());
            privateKeyNode.add(new DefaultMutableTreeNode(primeModulusP));

            String primeQ = MessageFormat.format(res.getString("DProperties.properties.private.dsa.PrimeQ"),
                                                 "0x" + dsaParams.getQ().toString(16).toUpperCase());
            privateKeyNode.add(new DefaultMutableTreeNode(primeQ));

            String generatorG = MessageFormat.format(res.getString("DProperties.properties.private.dsa.GeneratorG"),
                                                     "0x" + dsaParams.getG().toString(16).toUpperCase());
            privateKeyNode.add(new DefaultMutableTreeNode(generatorG));

            String secretExponentX = MessageFormat.format(
                    res.getString("DProperties.properties.private.dsa.SecretExponentX"),
                    "0x" + dsaPrivateKey.getX().toString(16).toUpperCase());
            privateKeyNode.add(new DefaultMutableTreeNode(secretExponentX));
        }

    }

    private Password getEntryPassword(String alias) {

        return currentState.getEntryPassword(alias);
    }

    private void createKeysNodes(DefaultMutableTreeNode parentNode) throws CryptoException {
        try {
            KeyStore keyStore = currentState.getKeyStore();

            TreeSet<String> aliases = getAliasesInAlphaOrder();

            DefaultMutableTreeNode keysNode = new DefaultMutableTreeNode(res.getString("DProperties.properties.Keys"));
            parentNode.add(keysNode);

            boolean keysPresent = false;

            for (String alias : aliases) {
                if (KeyStoreUtil.isKeyEntry(alias, keyStore)) {
                    createKeyNodes(keysNode, alias);

                    keysPresent = true;
                }
            }

            if (!keysPresent) {
                DefaultMutableTreeNode emptyKeyNode = new DefaultMutableTreeNode(
                        res.getString("DProperties.properties.None"));
                keysNode.add(emptyKeyNode);
            }
        } catch (KeyStoreException ex) {
            throw new CryptoException(res.getString("DProperties.NoGetProperties.exception.message"), ex);
        }
    }

    private void createKeyNodes(DefaultMutableTreeNode parentNode, String alias) throws CryptoException {
        try {
            KeyStore keyStore = currentState.getKeyStore();

            DefaultMutableTreeNode keyNode = new DefaultMutableTreeNode(alias);
            parentNode.add(keyNode);

            createLastModifiedNode(keyNode, alias);

            Password password = getEntryPassword(alias);

            if (password == null) {
                DefaultMutableTreeNode lockedNode = new DefaultMutableTreeNode(
                        res.getString("DProperties.properties.Locked"));
                keyNode.add(lockedNode);

                return;
            }

            Key key = keyStore.getKey(alias, password.toCharArray());

            if (key instanceof PublicKey) {
                createPublicKeyNodes(keyNode, (PublicKey) key);
            } else if (key instanceof PrivateKey) {
                createPrivateKeyNodes(keyNode, (PrivateKey) key);
            } else if (key instanceof SecretKey) {
                createSecretKeyNodes(keyNode, (SecretKey) key);
            }
        } catch (NoSuchAlgorithmException | KeyStoreException | UnrecoverableKeyException ex) {
            throw new CryptoException(res.getString("DProperties.NoGetProperties.exception.message"), ex);
        }
    }

    private void createSecretKeyNodes(DefaultMutableTreeNode parentNode, SecretKey secretKey) {
        DefaultMutableTreeNode secretKeyNode = new DefaultMutableTreeNode(
                res.getString("DProperties.properties.SecretKey"));
        parentNode.add(secretKeyNode);

        KeyInfo keyInfo = SecretKeyUtil.getKeyInfo(secretKey);
        String keyAlg = keyInfo.getAlgorithm();

        // Try and get friendly algorithm name for secret key
        SecretKeyType secretKeyType = SecretKeyType.resolveJce(keyAlg);

        if (secretKeyType != null) {
            keyAlg = secretKeyType.friendly();
        }

        secretKeyNode.add(new DefaultMutableTreeNode(
                MessageFormat.format(res.getString("DProperties.properties.Algorithm"), keyAlg)));

        Integer keySize = keyInfo.getSize();

        if (keySize != null) {
            secretKeyNode.add(new DefaultMutableTreeNode(
                    MessageFormat.format(res.getString("DProperties.properties.KeySize"), "" + keyInfo.getSize())));
        } else {
            secretKeyNode.add(new DefaultMutableTreeNode(
                    MessageFormat.format(res.getString("DProperties.properties.KeySize"), "?")));
        }

        String keyFormat = secretKey.getFormat();

        secretKeyNode.add(new DefaultMutableTreeNode(
                MessageFormat.format(res.getString("DProperties.properties.Format"), keyFormat)));

        String keyEncoded = "0x" + new BigInteger(1, secretKey.getEncoded()).toString(16).toUpperCase();

        secretKeyNode.add(new DefaultMutableTreeNode(
                MessageFormat.format(res.getString("DProperties.properties.Encoded"), keyEncoded)));
    }

    private void createLastModifiedNode(DefaultMutableTreeNode parentNode, String alias) throws CryptoException {
        try {
            KeyStore keyStore = currentState.getKeyStore();

            if (KeyStoreType.resolveJce(keyStore.getType()) != KeyStoreType.PKCS12) {
                String lastModified = MessageFormat.format(res.getString("DProperties.properties.LastModified"),
                                                           StringUtils.formatDate(keyStore.getCreationDate(alias)));
                parentNode.add(new DefaultMutableTreeNode(lastModified));
            }
        } catch (ProviderException e) {
            // some keystore types do not provide creation dates for their entries => simply create no node
        } catch (KeyStoreException e) {
            throw new CryptoException(res.getString("DProperties.NoGetProperties.exception.message"), e);
        }
    }

    private void copyPressed() {
        String properties = getNodeContents((TreeNode) jtrProperties.getModel().getRoot(), 0);

        Clipboard clipboard = Toolkit.getDefaultToolkit().getSystemClipboard();
        StringSelection copy = new StringSelection(properties);
        clipboard.setContents(copy, copy);
    }

    private void expandTwoLevels(TreePath treePath) {
        if (treePath.getPathCount() > 2) {
            return;
        }

        TreeNode node = (TreeNode) treePath.getLastPathComponent();

        if (node.getChildCount() >= 0) {
            for (Enumeration<?> enumChildren = node.children(); enumChildren.hasMoreElements(); ) {
                TreeNode subNode = (TreeNode) enumChildren.nextElement();
                TreePath path = treePath.pathByAddingChild(subNode);
                expandTwoLevels(path);
            }
        }

        jtrProperties.expandPath(treePath);
    }

    private String getNodeContents(TreeNode node, int level) {
        StringBuilder strBuff = new StringBuilder();

        strBuff.append(INDENT.toString(level));

        strBuff.append(node.toString().trim());
        strBuff.append(NEWLINE);

        for (int i = 0; i < node.getChildCount(); i++) {
            strBuff.append(getNodeContents(node.getChildAt(i), level + 1));
        }

        return strBuff.toString();
    }

    private void okPressed() {
        closeDialog();
    }

    private void closeDialog() {
        setVisible(false);
        dispose();
    }
}
